package com.common.util;

import java.text.DateFormat;
import java.text.ParsePosition;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;

public class CalendarUtil {   
	 
	   // 用来全局控制 上一周，本周，下一周的周数变化   
	   private int weeks = 0;   
	   private int MaxDate;// 一月最大天数   
	   private int MaxYear;// 一年最大天数   
	   private Calendar calendar = Calendar.getInstance();//实例化日历   
	 
	   /**测试  
	    * @param args  
	    */  
	   public static void main(String[] args) {   
	       CalendarUtil tt = new CalendarUtil();   
	       System.out.println("获取当天日期:" + tt.getNowTime("yyyy-MM-dd"));   
	       System.out.println("获取昨天日期:" + tt.getPreviousDay());   
	       System.out.println("获取本周一日期:" + tt.getMondayOFWeek());   
	       System.out.println("获取本周日的日期~:" + tt.getCurrentWeekday());   
	       System.out.println("获取上周一日期:" + tt.getPreviousWeekday());   
	       System.out.println("获取上周日日期:" + tt.getPreviousWeekSunday());   
	       System.out.println("获取下周一日期:" + tt.getNextMonday());   
	       System.out.println("获取下周日日期:" + tt.getNextSunday());   
	       System.out.println("获得相应周的周六的日期:" + tt.getNowTime("yyyy-MM-dd"));   
	       System.out.println("获取本月第一天日期:" + tt.getFirstDayOfMonth());   
	       System.out.println("获取本月最后一天日期:" + tt.getDefaultDay());   
	       System.out.println("获取上月第一天日期:" + tt.getPreviousMonthFirst());   
	       System.out.println("获取上月最后一天的日期:" + tt.getPreviousMonthEnd());   
	       System.out.println("获取下月第一天日期:" + tt.getNextMonthFirst());   
	       System.out.println("获取下月最后一天日期:" + tt.getNextMonthEnd());   
	       System.out.println("获取本年的第一天日期:" + tt.getCurrentYearFirst());   
	       System.out.println("获取本年最后一天日期:" + tt.getCurrentYearEnd());   
	       System.out.println("获取去年的第一天日期:" + tt.getPreviousYearFirst());   
	       System.out.println("获取去年的最后一天日期:" + tt.getPreviousYearEnd());   
	       System.out.println("获取明年第一天日期:" + tt.getNextYearFirst());   
	       System.out.println("获取明年最后一天日期:" + tt.getNextYearEnd());   
	       System.out.println("获取本季度第一天:" + tt.getThisSeasonFirstTime(11));   
	       System.out.println("获取本季度最后一天:" + tt.getThisSeasonFinallyTime(11));   
	       System.out.println("获取两个日期之间间隔天数2008-12-1~2008-9.29:"  
	               + CalendarUtil.getTwoDay("2008-12-1", "2008-9-29"));   
	       System.out.println("---------------->");   
	       System.out.println("获取当前月的第几周：" + tt.getWeekOfMonth());   
	       System.out.println("获取当前年份：" + tt.getYear());   
	       System.out.println("获取当前月份：" + tt.getMonth());   
	       System.out.println("获取今天在本年的第几天：" + tt.getDayOfYear());   
	          
	       System.out.println("获得今天在本月的第几天(获得当前日)：" + tt.getDayOfMonth());   
	       System.out.println("获得今天在本周的第几天：" + tt.getDayOfWeek());   
	       System.out.println("获得半年后的日期：" + tt.convertDateToString(tt.getTimeYearNext()));   
	   }   
	 
	   /**  
	    * 获得当前年份  
	    *   
	    * @return  
	    */  
	   public int getYear() {   
	       return calendar.get(Calendar.YEAR);   
	   }   
	   public String getPreviousDay() {  
		   calendar.add(Calendar.DATE, -1);
		   
	       return DateUtil.formatDateTime(calendar.getTime(), "yyyy-MM-dd");   
	   }   
	   public String getPreviousMonth() {  
		   calendar.add(Calendar.MONTH, -1);
		   
	       return DateUtil.formatDateTime(calendar.getTime(), "yyyy-MM");   
	   }   
	   public String getPreviousYear() {  
		   calendar.add(Calendar.YEAR, -1);
		   
	       return DateUtil.formatDateTime(calendar.getTime(), "yyyy");   
	   }   
	   /**  
	    * 获得当前月份  
	    *   
	    * @return  
	    */  
	   public int getMonth() {   
	       return calendar.get(Calendar.MONTH) + 1;   
	   }   
	 
	   /**  
	    * 获得今天在本年的第几天  
	    *   
	    * @return  
	    */  
	   public  int getDayOfYear() {   
	       return calendar.get(Calendar.DAY_OF_YEAR);   
	   }   
	 
	   /**  
	    * 获得今天在本月的第几天(获得当前日)  
	    *   
	    * @return  
	    */  
	   public  int getDayOfMonth() {   
	       return calendar.get(Calendar.DAY_OF_MONTH);   
	   }   
	 
	   /**  
	     * 获得今天在本周的第几天  
	     *   
	     * @return  
	     */  
	    public  int getDayOfWeek() {   
	        return calendar.get(Calendar.DAY_OF_WEEK);   
	    }   
	  
	    /**  
	     * 获得今天是这个月的第几周  
	     *   
	     * @return  
	     */  
	    public  int getWeekOfMonth() {   
	        return calendar.get(Calendar.DAY_OF_WEEK_IN_MONTH);   
	    }   
	  
	    /**  
	     * 获得半年后的日期  
	     *   
	     * @return  
	     */  
	    public  Date getTimeYearNext() {   
	        calendar.add(Calendar.DAY_OF_YEAR, 183);   
	        return calendar.getTime();   
	    }   
	       
	    public static String convertDateToString(Date dateTime){   
	        SimpleDateFormat df=new SimpleDateFormat("yyyy-MM-dd");   
	        return df.format(dateTime);   
	    }   
	       
	    /**  
	     * 得到二个日期间的间隔天数  
	     */  
	    public static String getTwoDay(String sj1, String sj2) {   
	        SimpleDateFormat myFormatter = new SimpleDateFormat("yyyy-MM-dd");   
	        long day = 0;   
	        try {   
	            java.util.Date date = myFormatter.parse(sj1);   
	            java.util.Date mydate = myFormatter.parse(sj2);   
	            day = (date.getTime() - mydate.getTime()) / (24 * 60 * 60 * 1000);   
	        } catch (Exception e) {   
	            return "";   
	        }   
	        return day + "";   
	    }   
	  
	    /**  
	     * 根据一个日期，返回是星期几的字符串  
	     *   
	     * @param sdate  
	     * @return  
	     */  
	    public static String getWeek(String sdate) {   
	        // 再转换为时间   
	        Date date = CalendarUtil.strToDate(sdate);   
	        Calendar c = Calendar.getInstance();   
	        c.setTime(date);   
	        // int hour=c.get(Calendar.DAY_OF_WEEK);   
	        // hour中存的就是星期几了，其范围 1~7   
	        // 1=星期日 7=星期六，其他类推   
	        return new SimpleDateFormat("EEEE").format(c.getTime());   
	    }   
	  
	    /**  
	     * 将短时间格式字符串转换为时间 yyyy-MM-dd  
	     *   
	     * @param strDate  
	     * @return  
	     */  
	    public static Date strToDate(String strDate) {   
	        SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");   
	        ParsePosition pos = new ParsePosition(0);   
	        Date strtodate = formatter.parse(strDate, pos);   
	        return strtodate;   
	    }   
	  
	    /**  
	     * 两个时间之间的天数  
	     *   
	     * @param date1  
	     * @param date2  
	     * @return  
	     */  
	    public static long getDays(String date1, String date2) {   
	        if (date1 == null || date1.equals(""))   
	            return 0;   
	        if (date2 == null || date2.equals(""))   
	            return 0;   
	        // 转换为标准时间   
	        SimpleDateFormat myFormatter = new SimpleDateFormat("yyyy-MM-dd");   
	        java.util.Date date = null;   
	        java.util.Date mydate = null;   
	        try {   
	            date = myFormatter.parse(date1);   
	            mydate = myFormatter.parse(date2);   
	        } catch (Exception e) {   
	        }   
	        long day = (date.getTime() - mydate.getTime()) / (24 * 60 * 60 * 1000);   
	        return day;   
	    }   
	  
	    // 计算当月最后一天,返回字符串   
	    public String getDefaultDay() {   
	        String str = "";   
	        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");   
	  
	        Calendar lastDate = Calendar.getInstance();   
	        lastDate.set(Calendar.DATE, 1);// 设为当前月的1号   
	        lastDate.add(Calendar.MONTH, 1);// 加一个月，变为下月的1号   
	        lastDate.add(Calendar.DATE, -1);// 减去一天，变为当月最后一天   
	  
	        str = sdf.format(lastDate.getTime());   
	        return str;   
	    }   
	  
	    // 上月第一天   
	    public String getPreviousMonthFirst() {   
	        String str = "";   
	        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");   
	  
	        Calendar lastDate = Calendar.getInstance();   
	        lastDate.set(Calendar.DATE, 1);// 设为当前月的1号   
	        lastDate.add(Calendar.MONTH, -1);// 减一个月，变为下月的1号   
	        // lastDate.add(Calendar.DATE,-1);//减去一天，变为当月最后一天   
	  
	        str = sdf.format(lastDate.getTime());   
	        return str;   
	    }   
	  
	    // 获取当月第一天   
	    public String getFirstDayOfMonth() {   
	        String str = "";   
	        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");   
	  
	        Calendar lastDate = Calendar.getInstance();   
	        lastDate.set(Calendar.DATE, 1);// 设为当前月的1号   
	        str = sdf.format(lastDate.getTime());   
	        return str;   
	    }   
	  
	    // 获得本周星期日的日期   
	    public String getCurrentWeekday() {   
	        weeks = 0;   
	        int mondayPlus = this.getMondayPlus();   
	        GregorianCalendar currentDate = new GregorianCalendar();   
	        currentDate.add(GregorianCalendar.DATE, mondayPlus + 6);   
	        Date monday = currentDate.getTime();   
	  
	        DateFormat df = DateFormat.getDateInstance();   
	        String preMonday = df.format(monday);   
	        return preMonday;   
	    }   
	  
	    // 获取当天时间   
	    public String getNowTime(String dateformat) {   
	        Date now = new Date();   
	        SimpleDateFormat dateFormat = new SimpleDateFormat(dateformat);// 可以方便地修改日期格式   
	        String hehe = dateFormat.format(now);   
	        return hehe;   
	    }   
	  
	    // 获得当前日期与本周日相差的天数   
	    private int getMondayPlus() {   
	        Calendar cd = Calendar.getInstance();   
	        // 获得今天是一周的第几天，星期日是第一天，星期二是第二天......   
	        int dayOfWeek = cd.get(Calendar.DAY_OF_WEEK) - 1; // 因为按中国礼拜一作为第一天所以这里减1   
	        if (dayOfWeek == 1) {   
	            return 0;   
	        } else {   
	            return 1 - dayOfWeek;   
	        }   
	    }   
	  
	    // 获得本周一的日期   
	    public String getMondayOFWeek() {   
	        weeks = 0;   
	        int mondayPlus = this.getMondayPlus();   
	        GregorianCalendar currentDate = new GregorianCalendar();   
	        currentDate.add(GregorianCalendar.DATE, mondayPlus);   
	        Date monday = currentDate.getTime();   
	  
	        DateFormat df = DateFormat.getDateInstance();   
	        String preMonday = df.format(monday);   
	        return preMonday;   
	    }   
	  
	    // 获得相应周的周六的日期   
	    public String getSaturday() {   
	        int mondayPlus = this.getMondayPlus();   
	        GregorianCalendar currentDate = new GregorianCalendar();   
	        currentDate.add(GregorianCalendar.DATE, mondayPlus + 7 * weeks + 6);   
	        Date monday = currentDate.getTime();   
	        DateFormat df = DateFormat.getDateInstance();   
	        String preMonday = df.format(monday);   
	        return preMonday;   
	    }   
	  
	    // 获得上周星期日的日期   
	    public String getPreviousWeekSunday() {   
	        weeks = 0;   
	        weeks--;   
	        int mondayPlus = this.getMondayPlus();   
	        GregorianCalendar currentDate = new GregorianCalendar();   
	        currentDate.add(GregorianCalendar.DATE, mondayPlus + weeks);   
	        Date monday = currentDate.getTime();   
	        DateFormat df = DateFormat.getDateInstance();   
	        String preMonday = df.format(monday);   
	        return preMonday;   
	    }   
	  
	    // 获得上周星期一的日期   
	    public String getPreviousWeekday() {   
	        weeks--;   
	        int mondayPlus = this.getMondayPlus();   
	        GregorianCalendar currentDate = new GregorianCalendar();   
	        currentDate.add(GregorianCalendar.DATE, mondayPlus + 7 * weeks);   
	        Date monday = currentDate.getTime();   
	        DateFormat df = DateFormat.getDateInstance();   
	        String preMonday = df.format(monday);   
	        return preMonday;   
	    }   
	  
	    // 获得下周星期一的日期   
	    public String getNextMonday() {   
	        weeks++;   
	        int mondayPlus = this.getMondayPlus();   
	        GregorianCalendar currentDate = new GregorianCalendar();   
	        currentDate.add(GregorianCalendar.DATE, mondayPlus + 7);   
	        Date monday = currentDate.getTime();   
	        DateFormat df = DateFormat.getDateInstance();   
	        String preMonday = df.format(monday);   
	        return preMonday;   
	    }   
	  
	    // 获得下周星期日的日期   
	    public String getNextSunday() {   
	  
	        int mondayPlus = this.getMondayPlus();   
	        GregorianCalendar currentDate = new GregorianCalendar();   
	        currentDate.add(GregorianCalendar.DATE, mondayPlus + 7 + 6);   
	        Date monday = currentDate.getTime();   
	        DateFormat df = DateFormat.getDateInstance();   
	        String preMonday = df.format(monday);   
	        return preMonday;   
	    }   
	  
	    private int getMonthPlus() {   
	        Calendar cd = Calendar.getInstance();   
	        int monthOfNumber = cd.get(Calendar.DAY_OF_MONTH);   
	        cd.set(Calendar.DATE, 1);// 把日期设置为当月第一天   
	        cd.roll(Calendar.DATE, -1);// 日期回滚一天，也就是最后一天   
	        MaxDate = cd.get(Calendar.DATE);   
	        if (monthOfNumber == 1) {   
	            return -MaxDate;   
	        } else {   
	            return 1 - monthOfNumber;   
	        }   
	    }   
	  
	    // 获得上月最后一天的日期   
	    public String getPreviousMonthEnd() {   
	        String str = "";   
	        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");   
	  
	        Calendar lastDate = Calendar.getInstance();   
	        lastDate.add(Calendar.MONTH, -1);// 减一个月   
	        lastDate.set(Calendar.DATE, 1);// 把日期设置为当月第一天   
	        lastDate.roll(Calendar.DATE, -1);// 日期回滚一天，也就是本月最后一天   
	        str = sdf.format(lastDate.getTime());   
	        return str;   
	    }   
	  
	    // 获得下个月第一天的日期   
	    public String getNextMonthFirst() {   
	        String str = "";   
	        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");   
	  
	        Calendar lastDate = Calendar.getInstance();   
	        lastDate.add(Calendar.MONTH, 1);// 减一个月   
	        lastDate.set(Calendar.DATE, 1);// 把日期设置为当月第一天   
	        str = sdf.format(lastDate.getTime());   
	        return str;   
	    }   
	  
	    // 获得下个月最后一天的日期   
	    public String getNextMonthEnd() {   
	        String str = "";   
	        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");   
	  
	        Calendar lastDate = Calendar.getInstance();   
	        lastDate.add(Calendar.MONTH, 1);// 加一个月   
	        lastDate.set(Calendar.DATE, 1);// 把日期设置为当月第一天   
	        lastDate.roll(Calendar.DATE, -1);// 日期回滚一天，也就是本月最后一天   
	        str = sdf.format(lastDate.getTime());   
	        return str;   
	    }   
	  
	    // 获得明年最后一天的日期   
	    public String getNextYearEnd() {   
	        String str = "";   
	        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");   
	  
	        Calendar lastDate = Calendar.getInstance();   
	        lastDate.add(Calendar.YEAR, 1);// 加一个年   
	        lastDate.set(Calendar.DAY_OF_YEAR, 1);   
	        lastDate.roll(Calendar.DAY_OF_YEAR, -1);   
	        str = sdf.format(lastDate.getTime());   
	        return str;   
	    }   
	  
	    // 获得明年第一天的日期   
	    public String getNextYearFirst() {   
	        String str = "";   
	        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");   
	  
	        Calendar lastDate = Calendar.getInstance();   
	        lastDate.add(Calendar.YEAR, 1);// 加一个年   
	        lastDate.set(Calendar.DAY_OF_YEAR, 1);   
	        str = sdf.format(lastDate.getTime());   
	        return str;   
	  
	    }   
	  
	    // 获得本年有多少天   
	    private int getMaxYear() {   
	        Calendar cd = Calendar.getInstance();   
	        cd.set(Calendar.DAY_OF_YEAR, 1);// 把日期设为当年第一天   
	        cd.roll(Calendar.DAY_OF_YEAR, -1);// 把日期回滚一天。   
	        int MaxYear = cd.get(Calendar.DAY_OF_YEAR);   
	        return MaxYear;   
	    }   
	  
	    private int getYearPlus() {   
	        Calendar cd = Calendar.getInstance();   
	        int yearOfNumber = cd.get(Calendar.DAY_OF_YEAR);// 获得当天是一年中的第几天   
	        cd.set(Calendar.DAY_OF_YEAR, 1);// 把日期设为当年第一天   
	        cd.roll(Calendar.DAY_OF_YEAR, -1);// 把日期回滚一天。   
	        int MaxYear = cd.get(Calendar.DAY_OF_YEAR);   
	        if (yearOfNumber == 1) {   
	            return -MaxYear;   
	        } else {   
	            return 1 - yearOfNumber;   
	        }   
	    }   
	  
	    // 获得本年第一天的日期   
	    public String getCurrentYearFirst() {   
	        int yearPlus = this.getYearPlus();   
	        GregorianCalendar currentDate = new GregorianCalendar();   
	        currentDate.add(GregorianCalendar.DATE, yearPlus);   
	        Date yearDay = currentDate.getTime();   
	        DateFormat df = DateFormat.getDateInstance();   
	        String preYearDay = df.format(yearDay);   
	        return preYearDay;   
	    }   
	  
	    // 获得本年最后一天的日期 *   
	    public String getCurrentYearEnd() {   
	        Date date = new Date();   
	        SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy");// 可以方便地修改日期格式   
	        String years = dateFormat.format(date);   
	        return years + "-12-31";   
	    }   
	  
	    // 获得上年第一天的日期 *   
	    public String getPreviousYearFirst() {   
	        Date date = new Date();   
	        SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy");// 可以方便地修改日期格式   
	        String years = dateFormat.format(date);   
	        int years_value = Integer.parseInt(years);   
	        years_value--;   
	        return years_value + "-01-01";   
	    }   
	  
	    // 获得上年最后一天的日期   
	    public String getPreviousYearEnd() {   
	        weeks--;   
	        int yearPlus = this.getYearPlus();   
	        GregorianCalendar currentDate = new GregorianCalendar();   
	        currentDate.add(GregorianCalendar.DATE, yearPlus + MaxYear * weeks   
	                + (MaxYear - 1));   
	        Date yearDay = currentDate.getTime();   
	        DateFormat df = DateFormat.getDateInstance();   
	        String preYearDay = df.format(yearDay);   
	        return preYearDay;   
	    }   
	  
	    // 获得本季度第一天   
	    public String getThisSeasonFirstTime(int month) {   
	        int array[][] = { { 1, 2, 3 }, { 4, 5, 6 }, { 7, 8, 9 }, { 10, 11, 12 } };   
	        int season = 1;   
	        if (month >= 1 && month <= 3) {   
	            season = 1;   
	        }   
	        if (month >= 4 && month <= 6) {   
	            season = 2;   
	        }   
	        if (month >= 7 && month <= 9) {   
	            season = 3;   
	        }   
	        if (month >= 10 && month <= 12) {   
	            season = 4;   
	        }   
	        int start_month = array[season - 1][0];   
	        int end_month = array[season - 1][2];   
	  
	        Date date = new Date();   
	        SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy");// 可以方便地修改日期格式   
	        String years = dateFormat.format(date);   
	        int years_value = Integer.parseInt(years);   
	  
	        int start_days = 1;// years+"-"+String.valueOf(start_month)+"-1";//getLastDayOfMonth(years_value,start_month);   
	        int end_days = getLastDayOfMonth(years_value, end_month);   
	        String seasonDate = years_value + "-" + start_month + "-" + start_days;   
	        return seasonDate;   
	  
	    }   
	  
	    // 获得本季度最后一天   
	    public String getThisSeasonFinallyTime(int month) {   
	        int array[][] = { { 1, 2, 3 }, { 4, 5, 6 }, { 7, 8, 9 }, { 10, 11, 12 } };   
	        int season = 1;   
	        if (month >= 1 && month <= 3) {   
	            season = 1;   
	        }   
	        if (month >= 4 && month <= 6) {   
	            season = 2;   
	        }   
	        if (month >= 7 && month <= 9) {   
	            season = 3;   
	        }   
	        if (month >= 10 && month <= 12) {   
	            season = 4;   
	        }   
	        int start_month = array[season - 1][0];   
	        int end_month = array[season - 1][2];   
	  
	        Date date = new Date();   
	        SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy");// 可以方便地修改日期格式   
	        String years = dateFormat.format(date);   
	        int years_value = Integer.parseInt(years);   
	  
	        int start_days = 1;// years+"-"+String.valueOf(start_month)+"-1";//getLastDayOfMonth(years_value,start_month);   
	        int end_days = getLastDayOfMonth(years_value, end_month);   
	        String seasonDate = years_value + "-" + end_month + "-" + end_days;   
	        return seasonDate;   
	  
	    }   
	  
	    /**  
	     * 获取某年某月的最后一天  
	     *   
	     * @param year  
	     *            年  
	     * @param month  
	     *            月  
	     * @return 最后一天  
	     */  
	    private int getLastDayOfMonth(int year, int month) {   
	        if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8  
	                || month == 10 || month == 12) {   
	            return 31;   
	        }   
	        if (month == 4 || month == 6 || month == 9 || month == 11) {   
	            return 30;   
	        }   
	        if (month == 2) {   
	            if (isLeapYear(year)) {   
	                return 29;   
	            } else {   
	                return 28;   
	            }   
	        }   
	        return 0;   
	    }   
	  
	    /**  
	     * 是否闰年  
	     *   
	     * @param year  
	     *            年  
	     * @return  
	     */  
	    public boolean isLeapYear(int year) {   
	        return (year % 4 == 0 && year % 100 != 0) || (year % 400 == 0);   
	    }   
	}    